Accurate feeding device of dezincification rotary kiln

Abstract

The utility model belongs to the technical field of rotary kilns, and particularly discloses an accurate feeding device of a dezincification rotary kiln, which comprises a kiln body and a feeding cylinder arranged at the feeding end of the kiln body, a material distributing table covering the sectional area of the feeding cylinder is arranged in the feeding cylinder, and a plurality of groups of material distributing cavities are arranged in the material distributing table; a material distributing frame is installed on the material distributing table and composed of a first sealing plate and a second sealing plate which are attached to the upper surface and the lower surface of the material distributing table respectively and keep rotating synchronously. An opening I is formed in the sealing plate I, and an opening II is formed in the sealing plate II; the projections of the first opening and the second opening on the cross section of the material distribution cavity are arranged in a staggered mode, the first opening is communicated with the tops of at least two sets of material distribution cavities at the same time, and the second opening is communicated with the bottoms of one set of material distribution cavities at most at the same time. Operators can accurately regulate and control the amount of materials entering the rotary kiln each time by controlling the rotating angle and speed of the material distributing frame, and the accurate requirements of different production stages and processes for the feeding amount are met.

Description

Technical Field

[0001] This utility model relates to the field of rotary kiln technology, specifically to a precision feeding device for a zinc stripping rotary kiln. Background Technology

[0002] In industries such as metallurgy and chemicals, rotary kilns are important thermal equipment, widely used in processes such as calcination, reduction, and dezincification of materials. The performance of a rotary kiln directly affects production efficiency and product quality, and precise control of material delivery is one of the key factors ensuring the efficient and stable operation of the rotary kiln. Traditional rotary kiln feeding systems typically employ a simple feed cylinder structure, with materials entering the kiln body by gravity or mechanical pushing. However, this feeding method suffers from inaccurate delivery control; traditional feeding systems struggle to precisely adjust the material delivery rate, leading to inaccurate material addition within the kiln, which affects the stability of the thermal process and the consistency of product quality. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a precision feeding device for dezincification rotary kilns.

[0004] To achieve the above objectives, the basic solution provided by this utility model is as follows: a precision feeding device for a dezincification rotary kiln, comprising a kiln body and a feeding cylinder installed at the feeding end of the kiln body, wherein a distribution platform covering the cross-sectional area of ​​the feeding cylinder is provided in the feeding cylinder, and a plurality of component feeding chambers are provided in the distribution platform.

[0005] A material distribution frame is installed on the material distribution platform. The material distribution frame is composed of a sealing plate one and a sealing plate two that are respectively attached to the upper and lower surfaces of the material distribution platform and rotate synchronously. The sealing plate one is provided with an opening one corresponding to the top of the material distribution cavity, and the sealing plate two is provided with an opening two corresponding to the bottom of the material distribution cavity.

[0006] The projections of opening one and opening two on the cross-section of the material distribution chamber are staggered, and opening one is simultaneously connected to the top of at least two material distribution chambers, while opening two is simultaneously connected to the bottom of at most one material distribution chamber.

[0007] Furthermore, the material distribution chambers are arranged in a circular array around the central axis of the material distribution platform, the sealing plate one and the sealing plate two rotate around the central axis of the material distribution platform, and the opening one and the opening two are set as arc-shaped grooves with the center on the central axis of the material distribution platform.

[0008] Furthermore, the material distribution chamber is provided with six sets, the central angle corresponding to the arc of the first opening is 160°~200°, and the central angle corresponding to the arc of the second opening is 40°~50°.

[0009] Furthermore, a circular through hole is provided at the central axis of the material distribution platform, and the first sealing plate and the second sealing plate are connected by a transmission rod, which is set in the circular through hole; a gear ring is provided in the middle part of the transmission rod, and a motor-driven gear is provided in the material distribution platform to mesh with the gear ring.

[0010] Furthermore, the material distribution platform is provided with an annular roller groove, and a ball bearing is embedded in the lower part of the sealing plate and is held in the roller groove.

[0011] Furthermore, the material distribution chamber is composed of a cylindrical chamber and an inverted frustum chamber, with the bottom end of the cylindrical chamber and the top end of the inverted frustum chamber being connected to each other.

[0012] Furthermore, the inner wall of the feeding cylinder is provided with a scraper that fits against the upper surface of the sealing plate. The side of the scraper is configured with an arc-shaped structure, and a reinforcing plate is provided at the upper part of the scraper to fix it to the inner wall of the feeding cylinder.

[0013] Furthermore, a frustum-shaped auxiliary block is provided at the axial center of the upper part of the sealing plate, and a support rod is provided in the opening.

[0014] Furthermore, the feed cylinder has an overall cylindrical structure and is divided into a feeding section, a distributing section, and a discharging section from top to bottom, with the diameters of the three sections decreasing sequentially. The feeding section and the distributing section are connected by an inverted frustum-shaped guide section one, and the distributing section and the discharging section are connected by an inverted frustum-shaped guide section two. The distributing platform and the distributing rack are both located in the distributing section.

[0015] Compared with existing technologies, the advantages of this utility model are:

[0016] 1. The opening of the first sealing plate is connected to the top of at least two group material chambers, and the opening of the second sealing plate is connected to the bottom of at most one group material chamber. The staggered projection of the openings allows the material to enter and exit the material chamber in a specific pattern. The operator can control the rotation angle and speed of the material distribution frame to precisely control the amount of material entering the rotary kiln each time, so as to meet the precise requirements of different production stages and processes for the amount of material to be fed.

[0017] 2. The material distribution platform covers the cross-sectional area of ​​the feed cylinder and has multiple material distribution chambers inside. Before entering the rotary kiln, the material is dispersed into each material distribution chamber. During the rotation of the material distribution frame, the material from different material distribution chambers enters the rotary kiln sequentially and alternately through the openings, avoiding material concentration and making the material more evenly distributed in the kiln. This is conducive to the full and stable dezincification reaction, improving dezincification efficiency and product quality. Attached Figure Description

[0018] Figure 1 is a schematic diagram of the feeding cylinder structure of this utility model;

[0019] Figure 2 is a schematic diagram of the scraper installation of this utility model;

[0020] Figure 3 is a schematic diagram of the material sorting platform and material sorting rack of this utility model;

[0021] Figure 4 is a schematic diagram of the material distribution platform structure of this utility model;

[0022] Figure 5 is a schematic diagram of the material distribution rack structure of this utility model.

[0023] The diagram is labeled as follows: 1. Feeding cylinder; 11. Feeding section; 12. Distributing section; 13. Discharge section; 14. Guide section one; 15. Guide section two; 2. Distributing platform; 21. Distributing chamber; 22. Circular through hole; 23. Groove; 3. Distributing frame; 31. Sealing plate one; 32. Sealing plate two; 33. Transmission rod; 34. Opening one; 35. Opening two; 36. Support rod; 37. Auxiliary block; 38. Gear ring; 39. Ball bearing; 4. Scraper; 41. Reinforcing plate. Detailed Implementation

[0024] The present invention will be further described in detail below through specific embodiments:

[0025] like Figure 1 As shown: A precision feeding device for a dezincification rotary kiln mainly consists of a kiln body and a feeding cylinder 1 installed at the inlet end of the kiln body. The feeding cylinder 1 has an overall cylindrical structure and is divided into an inlet section 11, a distribution section 12, and an outlet section 13 from top to bottom, with the diameters of the three sections decreasing sequentially. The inlet section 11 and the distribution section 12 are connected by an inverted frustum-shaped guide section 14, and the distribution section 12 and the outlet section 13 are connected by an inverted frustum-shaped guide section 15. This structural design facilitates the natural sliding and concentrated conveying of materials within the feeding cylinder 1, providing convenience for subsequent precision feeding.

[0026] like Figure 3 , Figure 4 As shown, a distribution platform 2 is provided in the distribution section 12 of the feeding cylinder 1, which can completely cover the cross-sectional area of ​​the distribution section 12. The distribution platform 2 has six distribution chambers 21 arranged in a circular array around its central axis. Each distribution chamber 21 consists of a cylindrical chamber and an inverted frustum chamber, with the bottom of the cylindrical chamber and the top of the inverted frustum chamber connecting to each other. This unique chamber structure facilitates the temporary storage and concentrated falling of materials, ensuring the stability of the feeding process.

[0027] like Figure 3 , Figure 5As shown, the material distribution frame 3 installed on the material distribution platform 2 consists of a first sealing plate 31 and a second sealing plate 32, which are respectively attached to the upper and lower surfaces of the material distribution platform 2 and rotate synchronously. The first sealing plate 31 and the second sealing plate 32 are connected by a transmission rod 33. A circular through hole 22 is provided at the central axis of the material distribution platform 2, and the transmission rod 33 is located in the circular through hole 22. A gear ring 38 is provided in the middle part of the transmission rod 33, and a motor-driven gear is provided inside the material distribution platform 2, which meshes with the gear ring 38. After the motor starts, the transmission rod 33 is driven to rotate through the meshing of the gear and the gear ring 38, thereby realizing the synchronous rotation of the first sealing plate 31 and the second sealing plate 32. In addition, the material distribution platform 2 is provided with an annular roller groove 23. The lower part of the first sealing plate 31 is embedded with a ball bearing 39, which is stuck in the roller groove 23. During the rotation of the material distribution frame 3, the ball bearing 39 rolls in the roller groove 23, which plays a role in auxiliary support and reducing friction, ensuring that the rotation of the material distribution frame 3 is smoother.

[0028] A frustum-shaped auxiliary block 37 is provided at the axial center of the upper part of the sealing plate 31, which helps the material to converge and guide at the opening 34; a support rod 36 is provided in the opening 34 to enhance the structural strength of the opening 34 and prevent deformation under the impact of the material.

[0029] The sealing plate 31 has an opening 34, which is an arc-shaped groove centered on the central axis of the distribution platform 2. The central angle of the arc is 160°~200°, and it is connected to the top of at least two distribution chambers 21. The sealing plate 32 has an opening 35, which is also an arc-shaped groove centered on the central axis of the distribution platform 2. The central angle of the arc is 40°~50°, and it is connected to the bottom of at most one distribution chamber 21. During the rotation of the distribution frame 3, the opening 34 first connects to the top of multiple distribution chambers 21, so that the material fills multiple distribution chambers 21. In this way, each feeding is based on the distribution chamber 21 as a basic statistical unit. The opening 35 connects to the bottom of a single distribution chamber 21, and the collected material is transported into the rotary kiln. By counting the number of materials falling into the distribution chambers 21, the feeding quantity is determined, achieving a precise control effect.

[0030] The projections of opening 1 34 and opening 2 35 on the cross-section of the material distribution chamber 21 are staggered. This arrangement ensures that opening 1 34 and opening 2 35 are not simultaneously connected to the same material distribution chamber 21, thus allowing the material distribution chamber 21 to perform only a single process of feeding or adding material, rather than simultaneously, thereby guaranteeing the accuracy of the statistical results.

[0031] Furthermore, the material is dispersed into various distribution chambers 21 before entering the rotary kiln. During the rotation of the distribution frame 3, the material from different distribution chambers 21 enters the rotary kiln sequentially and alternately through the openings, preventing concentrated material entry and ensuring a more uniform distribution within the kiln. This promotes a more complete and stable zinc removal reaction, improving zinc removal efficiency and product quality.

[0032] like Figure 2 As shown, the inner wall of the feeding cylinder 1 is equipped with a scraper 4 that fits against the upper surface of the sealing plate 31. The side of the scraper 4 is designed with an arc shape to match the movement trajectory of the sealing plate 31, which can promptly clean up residual material on the sealing plate 31 and prevent material accumulation from affecting the feeding accuracy. A reinforcing plate 41 is provided on the upper part of the scraper 4 and is fixed to the inner wall of the feeding cylinder 1 to enhance the structural strength of the scraper 4 and ensure that it maintains a stable working state during long-term use.

[0033] The above descriptions are merely embodiments of this utility model, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A precision feeder for a de-zincing rotary kiln, characterized in that, The kiln body and the feeding cylinder installed at the feeding end of the kiln body are provided with a distribution table covering the cross-sectional area of the feeding cylinder, and a plurality of groups of distribution cavities are arranged in the distribution table. A distribution frame is installed on the distribution table, and the distribution frame is composed of sealing plate one and sealing plate two which are attached to the upper and lower surfaces of the distribution table and rotate synchronously. The projections of the opening one and the opening two on the cross section of the distribution cavity are arranged in a staggered manner, and the opening one simultaneously communicates with the top of at least two groups of distribution cavities, and the opening two simultaneously communicates with the bottom of at most one group of distribution cavities.

2. The precise feeding device for a dezincing rotary kiln according to claim 1, characterized in that, The distribution cavities are arranged in a ring array around the central axis of the distribution table, and the sealing plate one and the sealing plate two rotate around the central axis of the distribution table, and the opening one and the opening two are arranged as arc-shaped grooves with the center on the central axis of the distribution table.

3. The precise feeding device for a dezincing rotary kiln according to claim 2, characterized in that, The distribution cavities are provided with six groups, the central angle of the arc-shaped opening one is 160 °~200 °, and the central angle of the arc-shaped opening two is 40 °~50 °.

4. The precise feeding device for a dezincing rotary kiln according to claim 3, characterized in that, A circular through hole is arranged at the central axis of the distribution table, the sealing plate one and the sealing plate two are connected through a transmission rod, and the transmission rod is arranged in the circular through hole.

5. The precise feeding device for a dezincing rotary kiln according to claim 4, characterized in that The middle part of the transmission rod is provided with a gear ring, and a gear driven by a motor is arranged in the distribution table and meshes with the gear ring.

6. The precise feeding device for a dezincing rotary kiln according to claim 5, characterized in that, An annular rolling groove is arranged on the distribution table, and the lower part of the sealing plate one is inlaid with a rolling ball clamped in the rolling groove.

7. The precise feeding device for a dezincing rotary kiln according to claim 6, characterized in that, The distribution cavity is composed of a cylindrical chamber and a rounded table chamber, and the bottom end of the cylindrical chamber and the top end of the rounded table chamber are mutually butted.

8. The precise feeding device for a dezincing rotary kiln according to claim 7, characterized in that A scraper plate is arranged on the inner wall of the feeding cylinder and attached to the upper surface of the sealing plate one, the side surface of the scraper plate is arranged in an arc-shaped structure, and a reinforcing plate is arranged on the upper part of the scraper plate and fixed to the inner wall of the feeding cylinder.

9. The precise feeding device for a dezincing rotary kiln according to claim 8, characterized in that A rounded table-shaped auxiliary block is arranged at the central part of the upper part of the sealing plate one, and a support rod is arranged in the opening one. The feeding cylinder is in a cylindrical structure, and is divided into a feeding section, a distribution section and a discharging section from top to bottom, and the diameters of the three sections decrease in turn. The feeding section and the distribution section are connected by a rounded table-shaped guide section one, and the distribution section and the discharging section are connected by a rounded table-shaped guide section two. The distribution table and the distribution frame are arranged in the distribution section.

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